Can anyone please give me the pin diagram to connect DPDT relay????

 

There are more than one kind, so not all pinouts are the same. What is your specific relay (manufacturer and part number).

 

To connect a DPDT relay, check out these 2 sources:


http://www.learningaboutelectronics.com/Articles/DPDT-relay-wiring-diagram
http://www.learningaboutelectronics.com/Articles/How-to-connect-a-double-pole-double-throw-relay-in-a-circuit



They have the pinout, diagram, and explanation of how to connect it.